MES Integration

42Q MES Northbound

ADVAIT publishes governed OT events to 42Q using the OT-MES v2.1 contract. Machines never publish to MES directly.

MES Status

Online

Publish Success

99.2%

Queue Depth

Contract

OT-MES v2.1

Endpoint

System: 42Q MES
URL: https://mes.42q.mss.local/api/v2/events
Auth: mTLS (client cert per ADVAIT node)
Retry: Exponential backoff, max 5 attempts, then dead-letter to ADVAIT queue

Contract Mapping — OT-MES v2.1

OT field	MES field
machine.id	asset_ref
state	operating_mode
productionCount	good_qty
cycleTimeSec	cycle_time_s
oee	oee_pct
dataQuality	quality_flag
alarms[]	events[]

Sample Published Payload

Governed by ADVAIT, sent to 42Q

{
  "contract": "OT-MES v2.1",
  "published_at": "2026-07-14T11:46:48.774Z",
  "asset_ref": "M-0001",
  "plant": "Nashik Plant",
  "section": "cutting",
  "operating_mode": "Running",
  "good_qty": 444,
  "cycle_time_s": 31.22,
  "oee_pct": 65.8,
  "quality_flag": "OK",
  "lineage": {
    "gateway": "WP500-001",
    "protocol": "MELSEC"
  }
}